Fluid pressure control apparatus for reducing swing or fall of v

Details Fluid pressure control apparatus for reducing swing or fall of v Fluid pressure control apparatus for reducing swing or fall of v

1986-05-12

1987-12-01

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188151A, 188349, 303 3, 60591, B60T 1300

Patent

active

047099682

ABSTRACT:
A fluid pressure control apparatus for a vehicle includes: an inlet port connected to a master cylinder; an outlet port connected to a wheel cylinder of a brake apparatus for a front wheel; a valve apparatus arranged in a path connecting the inlet and outlet ports; a movable plunger for closing and opening the valve apparatus, receiving fluid pressures at both sides; a first spring for urging the plunger in the direction to open the valve apparatus; an electromagnetic coil to be energized by a signal transmitted on the basis of the driver's operation for driving the vehicle backwards; the valve apparatus including a valve body which can be separated from and slated on a valve seat formed on the plunger; a second spring for urging the valve body to the first position where the valve body cannot contact with the valve seat of the plunger in spite of movement of the plunger; and the valve body being moved by energization of the electromagnetic coil to the second position where the valve body can contact with the valve seat of the plunger with movement of the plunger.

REFERENCES:
patent: 3653722 (1972-04-01), Klimek
patent: 3701567 (1972-10-01), Shutt et al.
patent: 3712683 (1973-01-01), Keady et al.
patent: 3729237 (1973-04-01), Ishikawa et al.
patent: 3975059 (1976-08-01), Orzel
patent: 4358163 (1982-11-01), Young
patent: 4431235 (1984-02-01), Cheron et al.
patent: 4600245 (1986-07-01), Watanabe
patent: 4610338 (1986-09-01), Kubota et al.
patent: 4623199 (1986-11-01), Steel

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